Method of and apparatus for attaching fly strips to a slide fastener chain
AssigneeYoshida Kogyo K. K.
InventorsRonald J. Boser, Michael T. Martin
Life of this patent
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Abstract
Automatic assembly for sewing flypiece to a continuous slide fastener chain includes a sewing machine, a gapping device from which the continuous chain having element-free gaps formed at regular intervals therealong is fed to the sewing machine, and a flypiece delivery system for successively retrieving individual flypieces one at a time from a stack and successively advancing to the sewing machine. The flypiece delivery system is arranged such that successive flypieces are sewn to the fastener chain virtually even with the rate at which gapped chain is delivered from the gapping device.
Claims17
A method of sewing fly strips onto a continuous slide fastener chain, comprising the steps of:
- passing a continuous slide fastener chain through a gapping unit for forming fastener element-free gaps in said chain between predetermined ungapped lengths therealong,
- delivering said gapped continuous slide fastener chain from said gapping unit to a sewing station defined by a sewing machine,
- successively feeding fly strips from a stack along a feed path to said sewing station,
- detecting the gaps in said chain to trigger the start of each successive feeding step, and
- advancing respective fly strips and chain lengths through said sewing station for sewing said flystrips onto said chain.
Apparatus for automatically feeding and sewing fly strips onto a continuous slide fastener chain, comprising a sewing station defined by a sewing machine for receiving fly strips and advancement of slide fastener chain in succession therethrough, delivery means for advancing said chain to said sewing station, and feeding means for conducting a succession of fly strips to said sewing station, said feeding means comprising means for successively picking and transferring an uppermost fly strip from a stack, feed table means for receiving each said fly strip and defining a feed path over which said succession of fly strips passes, and a pusher means disposed for back and forth movement over and along said feed path and movable between a lowered position for engaging each said fly strip during a forward movement along said feed path and a raised position during a return movement along said feed path.
Apparatus for automatically feeding and sewing fly strips onto a continuous slide fastener chain comprising a sewing station defined by a sewing machine for receiving fly strips and advancement of slide fastener chain in succession therethrough, a gapping unit for forming fastener element-free gaps in said chain at predetermined spaced intervals along the length thereof, means for advancing said chain through said gapping unit to said sewing station, and feeding means for conducting a succession of fly strips from a stack to said sewing station, such that said fly strips are sewn to said chain substantially even with the rate at which said chain is delivered from said gapping unit.
Dependencies are inferred from the claim text.